結果
問題 | No.274 The Wall |
ユーザー | is_eri23 |
提出日時 | 2015-09-06 09:36:33 |
言語 | C++11 (gcc 11.4.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,207 bytes |
コンパイル時間 | 1,507 ms |
コンパイル使用メモリ | 161,108 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-07-19 04:20:07 |
合計ジャッジ時間 | 2,476 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 1 ms
6,944 KB |
testcase_05 | AC | 1 ms
6,940 KB |
testcase_06 | AC | 1 ms
6,940 KB |
testcase_07 | AC | 1 ms
6,940 KB |
testcase_08 | AC | 1 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 1 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 12 ms
6,940 KB |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | AC | 1 ms
6,940 KB |
testcase_17 | AC | 2 ms
6,940 KB |
testcase_18 | AC | 2 ms
6,940 KB |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | AC | 8 ms
6,940 KB |
testcase_23 | AC | 5 ms
6,944 KB |
testcase_24 | WA | - |
testcase_25 | WA | - |
ソースコード
#include <bits/stdc++.h> #define EPS 1e-9 #define INF 1070000000LL #define MOD 1000000007LL #define fir first #define foreach(it,X) for(auto it=(X).begin();it!=(X).end();it++) #define numa(x,a) for(auto x: a) #define ite iterator #define mp make_pair #define rep(i,n) rep2(i,0,n) #define rep2(i,m,n) for(int i=m;i<(n);i++) #define pb push_back #define pf push_front #define sec second #define sz(x) ((int)(x).size()) #define ALL( c ) (c).begin(), (c).end() #define gcd(a,b) __gcd(a,b) #define mem(x,n) memset(x,n,sizeof(x)) #define endl "\n" using namespace std; template <int POS, class TUPLE> void deploy(std::ostream &os, const TUPLE &tuple){} template <int POS, class TUPLE, class H, class ...Ts> void deploy(std::ostream &os, const TUPLE &t){ os << (POS == 0 ? "" : ", ") << get<POS>(t); deploy<POS + 1, TUPLE, Ts...>(os, t); } template <class T,class U> std::ostream& operator<<(std::ostream &os, std::pair<T,U> &p){ os << "(" << p.first <<", " << p.second <<")";return os; } template <class T> std::ostream& operator<<(std::ostream &os, std::vector<T> &v){ int remain = v.size(); os << "{"; for(auto e: v) os << e << (--remain == 0 ? "}" : ", "); return os; } template <class T> std::ostream& operator<<(std::ostream &os, std::set<T> &v){ int remain = v.size(); os << "{"; for(auto e: v) os << e << (--remain == 0 ? "}" : ", "); return os; } template <class T, class K> std::ostream& operator<<(std::ostream &os, std::map<T, K> &mp){ int remain = mp.size(); os << "{"; for(auto e: mp) os << "(" << e.first << " -> " << e.second << ")" << (--remain == 0 ? "}" : ", "); return os; } #define DEBUG1(var0) { std::cerr << (#var0) << "=" << (var0) << endl; } #define DEBUG2(var0, var1) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG1(var1); } #define DEBUG3(var0, var1, var2) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG2(var1,var2); } #define DEBUG4(var0, var1, var2, var3) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG3(var1,var2,var3); } using ll = long long; pair <int,int> nums[2010]; bool OK[2010][2]; int N, M; pair <int,int> rev(pair <int,int> x){ return mp(M - x.sec, M - x.fir); } bool cross(pair <int,int> x, pair <int,int> y){ if (x > y) { swap(x,y); } return y.fir - x.sec <= 0; } bool assign(pair <int,int> s, int x){//[i,j] rep2(i,x+1,N){ OK[i][0] &= !cross(s, nums[i]); OK[i][1] &= !cross(s, rev(nums[i])); } return true; } bool test(pair <int,int> s, int x){//[i,j] rep2(i,x+1,N){ if (OK[i][0] && !cross(s,nums[i])) { continue; } if (OK[i][1] && !cross(s, rev(nums[i]))) { continue; } return false; } return true; } bool update(int x){ if (OK[x][0]) { if (test(nums[x], x)) { assign(nums[x], x); return true; } } if (OK[x][1]) { if (test(rev(nums[x]), x)) { assign(rev(nums[x]), x); return true; } } return false; } int main() { cin.tie(0); ios_base::sync_with_stdio(0); rep(i,2010){ rep(j,2){ OK[i][j] = true; } } cin >> N >> M; M--; rep(i,N){ cin >> nums[i].fir >> nums[i].sec; } rep(i,N){ auto b = update(i); if (!b) { cout << "NO\n"; return 0; } } cout << "YES\n"; return 0; }